The TKI-Ferrite Ltd. does its best to meet every customer request by the possibly shortest delivery and highest level. The company complies with the challenge of the telecommunication market quickly and flexibly.
This strategy would not be realised without a stable technical background, comprehensive knowledge and contacts. The TKI-Ferrit owns all of the basic technics and professions, such as
•classical ceramic technology
The essential, irreplaceable components of the ferrite devices are the microwave ferrite/garnet materials which are prepared by solid state reactions on high temperature sintering (1000-1450C). We developed more than 100 ferrite/garnet materials with different chemical compositions.
This large material assortiment makes us possible to offer passive microwave devices with different frequency bandwidth power handling (from 70 MHz to 40 GHz) and working temperature range with a reasonable delivery period.
•Thin-film-, hybrid technology, photolithography
•Different surface treatment methods
•Cutting, grinding, lapping and polishing of ferrites and ceramics
•Material investigation (classical wet-chemical analysis, investigation of the morphology of our materials, etc.)
•Microwave measurements, such as ◦measurement of the microwave material’s parameters: 4πMS, ΔH, tgδ, ε, Tc, temperature dependence of the 4πMS, etc.
◦measurement of the transmission parameters: insertion loss, isolation, reflection, etc.
According to our wide-ranging international cooperations we are able to enlarge our capabilities and possibilities further.
The more decades knowledge and experience of our specialists make possible to enrich the assortiment of our products with newly developed passive components (high power circulators/isolators, directional couplers, 3 dB hybrids, power dividers/combiners, etc.)
On the base of our technical background and previous R&D results we are ready to develop superconducting ceramics, absorbers and nanoferrites.
PASSIVE MICROWAVE COMPONENTS
The passive microwave components, first of all nonreciproc ferrite devices are essential systems and subsystems for telecommunication applications. The TKI-Ferrite Ltd. the only and traditional producer of these devices and microwave ferrite/garnet materials in Hungary.
We offer narrow and broad band circulators and isolators in waveguide, stripline and microstripline construction from 70 MHz to 40 GHz frequency range.
The TKI-Ferrite Ltd. offers not only standard but customer designed, unique passive microwave components.
waveguide ferrite devices
coaxial ferrite devices
drop in (microstrip) ferrite devices
other passive microwave devices: loads, directional couplers, waveguide transitions, etc.
CHARACTERISATION OF THE FERRITE DEVICES:
The basic parameters of different ferrite devices (isolators, circulators, etc.) are measured by scalar network analyzers and / or computer controlled test systems.
The measurements are carried out by sweepers, frequencyresponse test sets, frequency counters, A/D converters, directonal couplers and / or network analyzer units. All the equipments and instruments are made by such firms as Takeda Riken, HP, Anritsu, a.s.o.
The control unit is an IBM PC compatible computer with an error-correction software possibility.
All the measurements can be carried out at different environmental conditions as required.
POLICRYSTALLINE FERRITES AND GARNETS
The assortment of polycrystalline soft magnetic ferrite and garnet materials, developed and produced in TKI-Ferrite Ltd., covers the entire frequency range from 100 MHz to 40.0 GHz. Refering to spinell ferrites, main emphasis was put on the development of MgMn ferrites with low dielectric losses (mainly for the 4 to 8 GHz frequency range). Li ferrites with a temperature stability over a wide temperature range are applied in the 10 to 18 GHz freqency band, while NiZn ferrites with an extremely high Curie-temperature and losses above 20 GHz.
TKI-Ferrite Ltd. offers garnets with magnetic properties independent of temperature between –20Â°C and +60Â°C, and garnets with very low loss factors. TKI-Ferrite Ltd. can produce garnets and ferrites with any kind of values of the saturation magnetization between 25 mT and 500 mT. Machining facilities are available to produce various shapes such as plates, triangles, discs. etc. to meet application requirements. Substrates are also available.
Materials of increased power handling capability are prepared from garnet materials doped with holmium or dysprosium. Additional TKI-Ferrite Ltd. equipment might result in the production of rubber ferrites, absorbers or superconductors.
We have developed M and W types of hexagonal ferrites pressed in magnetic field for mm-wave applications.
TKI-Ferrite Ltd is willing to develop circulators, isolators, phase shifters and polarizers according to customers’ specifications.